3. Racks shall be designed for front access to allow back-to-back or side-by-side
installation.
4. Racks shall be designed to allow easy insertion and removal of all modules
without the use of tools. Supports shall be provided for precise alignment of
dimmer modules into power and signal connector blocks. With modules
removed, racks shall provide clear front access to all load, neutral and control
terminations. Racks that require removable panels to access load, neutral or
control terminations shall not be acceptable.
5. An optional bus bar kit shall be available from the factory to allow adjacent
racks to be powered by a single line feed. No hard, rack-to-rack wiring shall be
required. Racks that require discrete cabling to connect adjacent racks shall
not be acceptable.
6. Module spaces shall be mechanically keyed to accept only the module type
(20A, 50A or 100A) specified for that space. Racks that allow modules of
varying wattages to plug into the same space shall not be acceptable. The
rack shall be configurable to accept mixed dimmer types and sizes throughout
the rack.
7. Each rack shall provide a lockable full-height door containing an integral
electrostatic air filter that shall be removable for easy cleaning. A single
low-noise fan shall be located at the top of each rack. The fan shall draw all
intake air through the integral electrostatic air filter, over the surfaces of the
module housing and out the top of the rack. The fan shall maintain the
temperature of all components at proper operating levels with dimmers under
full load, provided the ambient temperature of the dimmer room does not
exceed 40C/104F. Dimmer racks that do not employ both locking doors and
electrostatic air filters shall not be acceptable. The fan shall turn on whenever
any dimmer in the system is activated. In the event of an over-temperature
condition, only the affected dimmer module(s) shall shut down and a message
shall appear on the control module LCD. The fan shall remain on during
thermal shutdown of individual dimmer modules.
8. An airflow sensor shall be provided. In the event of inadequate airflow, the
affected rack shall shut down until the error is corrected.
9. If the ambient room temperature drops below 0C/32F or rises above 40
C/104F, a warning shall appear on the dimmer rack LCD. If the temperature
rises above 46C/115F, the rack shall shut down until the condition is
corrected.
10. A 3 x .5-inch LED status indicator (beacon) shall be mounted in the rack door.
The beacon shall be visible throughout a wide viewing angle. In normal
operation conditions, this LED is illuminated. If the rack's control module
senses an error condition, the beacon shall flash until the error is corrected. An
optional indicator shall be available for remote locations.
SR3-6 (6 module) 16.6”H x 14.8”W x 13.3”D
SR3-12 (12 module) 25.8”H x 14.8”W x 13.3”D
SR3-24 (24 module) 45.8”H x 14.8”W x 16.8”D
SR3-48 (48 module) 83.1”H x 14.8”W x 22.8”D
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